I was out in southern Ceredigion yesterday (Capel Dewi, just north of the Teifi) doing Brown Hairstreak egg surveys, and was struck, as always when doing BH surveys in SW Wales, by the abundance of R. triquetrus on lane banks.
I've still to record this species in Glam! Barry, could you post a map please? Maybe one for each of the Rhytidiadelphus species if you have time. Thanks.